S-90269A928 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress loads
• Precise component alignment and rotation enabled by the 80mm shoulder with tight diameter and length tolerances
• Secure, non-slip installation with a knurled head and 12 mm hex drive for superior grip and torque application
• Robust thread engagement with Class 5g6g fit M20x2.5 coarse threads ensuring consistent fastening and vibration resistance
• Enhanced durability and minimal maintenance from the black oxide finish, which adds an extra layer of protection against wear and corrosion
• Guaranteed quality and safety through full compliance with ISO 7379, RoHS 3, and REACH regulations

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical challenges in precision machinery and assembly. The 316 stainless steel material provides excellent resistance to chemicals and saltwater corrosion, making it suitable for marine, chemical processing, and food industry applications. The long, 80mm shoulder with its exceptionally tight tolerances acts as a precise pivot, axle, or spacer, eliminating the need for additional bushings and reducing assembly complexity. The black oxide finish not only enhances corrosion protection but also reduces light reflection, which is beneficial in optical or sensitive equipment. The combination of high tensile strength and a knurled hex head ensures that the screw remains securely fastened in high-vibration environments, providing reliable performance in automation systems, conveyor assemblies, and heavy-duty rotating equipment.

Specification Summary & Compliance

This metric shoulder screw features an M20x2.5 coarse thread with a Class 5g6g thread fit for standard industrial applications. The shoulder diameter tolerance is held to -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring high precision. The manufacturing and quality are strictly controlled to meet the ISO 7379 standard. Furthermore, this product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to the latest environmental and safety regulations for industrial components.